You company need choose approach here.
Each incoming crypto transaction convert to fiat by current rate.
Bank detail for SEPA transfer
Your bitcoin address for crypto requests
Your ethereum address for crypto requests
Url to your server. Details here.
⚠ Enter full url with protocol. Example: https://best-client.com/api/callback
Click by "continue"
Transaction not convert automatically. You manually convert crypto to fiat by profitable rate.
Now you need download document, sign and send to email firstname.lastname@example.org.